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Enable trim support on Apple and third party SSD’s
Authored by: usovalx on Mar 30, '11 04:26:53AM

I don't have SSD drive myself to test it, but following recipie might work (adoption from the above-mentioned ubuntu link):

- create large test file filling it in with some pattern
- use hfsdebug (http://osxbook.com/software/hfsdebug/) to find address of the pysical sectors of the file
- use dd to verify you have got the correct address
- remove file & clean your trash
- use dd once more to make sure sectors are empty now



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Enable trim support on Apple and third party SSD’s
Authored by: chucky23 on Mar 30, '11 05:42:35AM

Thanks, usovalx.

That's exactly what I was looking for upthread. I figured there had to be SOME way of testing TRIM from within OS X.

If I can figure out how hfsdebug works, (or if you want to provide a more detailed step-by-step), I'll try with the stock kernel extension, and then install the new kernel and try the same test.



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Enable trim support on Apple and third party SSD’s
Authored by: chucky23 on Apr 02, '11 01:52:19PM

FWIW, it seems hfsdebug is no longer available for download anywhere on the internet...



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